Thanks for the advice. I'm quite familiar with the Balmar products and have used them, but still interested if anyone has experience with this particular alternator. I have my own reason for wanting to know the set point of the internal regulator too.

Thanks for the data sheet on the original alternator, but I'm really looking for an upgraded alternator, and thought the one referred to above might be a reasonably priced choice. OTOH I'm starting to lean toward a Balmar alt/reg/serpentine kit after all.

The 115amp Mitsubishi unit used on the currentVolvodiesel engines is a pretty robust unit that has been very reliable. It is internally regulated but can easily be modified to accept external control.

Unfortunately it will require some engine modifications to fit on your engine:
1. Your current alternator has a single 2 inch mounting foot, and the 115a unit mounts with two feet. You would have to modify your starboard front engine mount bracket somewhat to accept the alternator. (not too hard, but needs to be done)
2. Change out the crankshaft pulley to that from a D2-55C or later with the serpentine pulley
3. Change circulation pump pulley to the serpentine version.

An alternative strategy might be to leave your existing alternator alone and to add a second alternator which can be remotely controlled. Volvo makes brackets and pulleys to mount second alternators, or you could go with aftermarket units.

The 115amp Mitsubishi unit used on the current Volvo diesel engines is a pretty robust unit that has been very reliable. It is internally regulated but can easily be modified to accept external control.

Unfortunately it will require some engine modifications to fit on your engine:
1. Your current alternator has a single 2 inch mounting foot, and the 115a unit mounts with two feet. You would have to modify your starboard front engine mount bracket somewhat to accept the alternator. (not too hard, but needs to be done)
2. Change out the crankshaft pulley to that from a D2-55C or later with the serpentine pulley
3. Change circulation pump pulley to the serpentine version.

An alternative strategy might be to leave your existing alternator alone and to add a second alternator which can be remotely controlled. Volvo makes brackets and pulleys to mount second alternators, or you could go with aftermarket units.